Developer Utility APIs: The Building Blocks You Use Every Day

Every project needs UUIDs, password hashing, cron parsing, or regex testing at some point. These are small problems that do not justify a library dependency or custom implementation in every service. Developer utility APIs give you battle-tested implementations of common tasks through a consistent REST interface.

Why use developer utility APIs?

Reduce dependencies — one API key replaces a dozen npm packages across your services
Get consistent behavior across languages and platforms (Node.js, Python, Go, etc.)
Avoid subtle bugs in cryptographic operations by using server-side implementations
Test and debug regex, cron expressions, and JWTs without installing local tools
Generate secure passwords and UUIDs with proper randomness guarantees

Developer Utils APIs

11 APIs available in this category. All included in every plan.

Subscription Analytics API

Analyze subscription costs and find savings

Image Info API

Extract image metadata (dimensions, format, EXIF)

JWT API

Create, decode, and verify JSON Web Tokens

Hash Tools API

Generate and verify hashes (MD5, SHA1, SHA256, etc.)

Crypto Tools API

Hash generation, UUID, passwords, and encoding tools

Regex Tester API

Test, validate, and use regular expressions

Cron Parser API

Parse and explain cron expressions

UUID Generator API

Generate and validate UUIDs, ULIDs, and NanoIDs

Password Generator API

Generate secure passwords and passphrases

Utils API

General-purpose utility functions for common dev tasks

MIME Lookup API

Bidirectional MIME type and file extension lookup

How to use developer utilities with Van Moose

Browse the utility catalog

The Developer Utils category includes UUID Generator, Password Generator, Hash Tools, Crypto Tools, JWT API, Regex Tester, Cron Parser, MIME Lookup, and more.

Call from any language

All APIs use standard REST with JSON responses. Use curl, fetch, axios, requests, or any HTTP client. The vanmoose-js SDK provides typed methods for JavaScript/TypeScript.

Use in CI/CD and scripts

Utility APIs work great in build scripts, CI pipelines, and automation. Generate UUIDs for test fixtures, validate cron schedules before deployment, or hash configuration values.

Quick example

Subscription Analytics API

curl -X GET \
  "https://subanalytics.vanmoose.cc" \
  -H "Authorization: Bearer vm_live_YOUR_API_KEY"

Replace vm_live_YOUR_API_KEY with your actual API key from the dashboard.

Frequently asked questions

What UUID versions are supported?+

The UUID Generator API supports UUID v4 (random), ULID (sortable, Crockford base32), and NanoID (compact, URL-safe). You can generate single or bulk identifiers in one request.

How does the JWT API work?+

The JWT API can create, decode, and verify JSON Web Tokens. Provide a payload and secret to create a token, or send an existing token to decode its claims and verify its signature. Supports HS256, HS384, and HS512 algorithms.

Can I test regex patterns via the API?+

Yes. The Regex Tester API accepts a pattern and test string, returning all matches with groups, indices, and execution time. Useful for validating regex before deploying to production.

What hash algorithms are available?+

The Hash Tools API supports MD5, SHA1, SHA256, SHA384, SHA512, and HMAC variants. It can generate hashes from text input and verify hash matches. For password hashing specifically, use bcrypt via the Crypto Tools API.

Start building with Developer Utils APIs

Get 500 free requests/month. No credit card required. All 11 APIs in this category included.

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